TiO2 nanopores with high sensitivity to ultraviolet light
Source abstract
Abstract
Abstract We investigated the UV photoconductivity and transient response of TiO2 nanopores on silicon substrate. Ti thin films were first deposited by radio-frequency (RF) magnetron sputtering and then anodized in glycerol electrolytes containing ammonium fluoride (NH4F). For the UV irradiation, the rise and decay curves of photocurrent are well fitted to a bi-exponential function. In both cases, the photocurrent was dominated by an initial fast response about 2 s. The ohmic I–V characteristic of the TiO2 nanopores under illumination could be ascribed to the decrease of the Schottky barrier height, to the accumulation of conduction electrons, resulted from the neutralization between photogenerated holes and negatively charged oxygen ions. These nanopores arrays could be useful in serving as photodetectors, chemical and biological sensors, and switching devices for nanoscale optoelectronics.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Analytical Chemistry and Sensors · Ion-surface interactions and analysis · Advanced biosensing and bioanalysis techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (23)
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